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31-320-RFX — Amphenol product photo
Amphenol

31-320-RFX BNC Plug, 50 Ohm, RG-58, 4 GHz, Crimp Termination

MPN31-320-RFX
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Amphenol RF 31-320-RFX BNC plug, male pin, 50 Ohm, bayonet lock, free-hanging, crimp or solder, gold center contact, RG-58 cable group, 4 GHz max frequency.

$3.6400Ref. price · indicative, final on quote
31-320-RFX datasheet
StockContact for availability
MOQ1 pcs
  • New & original stockTraceable channels only — no mixed lots, no re-taped reels.
  • Factory packaging where availableSealed reels, trays and bags; cut quantities always stated on the quote.
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Specifications

31-320-RFX Technical Specifications
ParameterValue
Mounting typeFree Hanging (In-Line)
Connector typePlug, Male Pin
Fastening typeBayonet Lock
Voltage rating500 V
Frequency - max4 GHz
Cable groupRG-58, 58A, 58B, 58C, 141, 303, LMR-195, Belden B7806A, 9907
Operating temperature-40°C~85°C
Body materialBrass
Housing colorSilver
Dielectric materialPolyoxymethylene (POM) Acetal
Center contact materialBrass
PackageBulk
Includes3 pcs - 1 Connector, 1 Contact, 1 Ferrule
Impedance50Ohm
Body finishNickel
Mating cycles500
Insertion loss0.2dB
Number of ports1
Shield terminationCrimp
Contact terminationCrimp or Solder
Center contact platingGold

Product details

RG-58 and Compatible Cable Group

The 31-320-RFX: This plug is built for the RG-58 family — RG-58A, 58B, 58C — plus RG-141, RG-303, LMR-195, and Belden 9907. If your cable is in that group, the ferrule ID and center contact pin diameter are a match. The sibling 31-315-RFX targets RG-174/316 class cables instead, so pick the one that fits your coax diameter.

Termination: Crimp or Solder

The center contact accepts either crimp or solder termination — your choice depending on tooling and production volume. The shield is crimped using the included ferrule, a standard BNC field-install method.

Frequently asked questions

Is 31-320-RFX compatible with RG-58 coaxial cable?

Yes, it is designed for RG-58, 58A, 58B, 58C, as well as RG-141, RG-303, LMR-195, and Belden 9907 cables.

Does 31-320-RFX include the contact and ferrule?

Yes, the kit includes three pieces: the connector body, one center contact, and one ferrule.

What is the cross reference for 31-320-RFX?

No official cross-reference exists. The closest functional sibling is the 31-315-RFX, which is the same BNC plug but configured for RG-174/316 class cables instead of RG-58.

What is the impedance of 31-320-RFX?

50 Ohms nominal, standard for BNC test and instrumentation applications.